16971066 has 128 divisors (see below), whose sum is σ = 48384000. Its totient is φ = 4292352.

The previous prime is 16971037. The next prime is 16971091. The reversal of 16971066 is 66017961.

It is a self number, because there is not a number n which added to its sum of digits gives 16971066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 122025 + ... + 122163.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 2^16971066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16971066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24192000).

16971066 is an abundant number, since it is smaller than the sum of its proper divisors (31412934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16971066 is a wasteful number, since it uses less digits than its factorization.

16971066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 16971066 is about 4119.5953684798. The cubic root of 16971066 is about 256.9821988508.

The spelling of 16971066 in words is "sixteen million, nine hundred seventy-one thousand, sixty-six".